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Preparation of diketopyrrolopyrrole-based (DPP) polymers for organic electronics
Solanský, Lukáš ; Veselý, Dominik (referee) ; Cigánek, Martin (advisor)
The modern world is burdened by dependence on electricity and problems with its production. A very advantageous way to gain electricity is through photovoltaics. However, the production of silicon solar cells is demanding and expensive with a high impact on the environment. For this reason, there is an effort to switch to solar cells based on organic semiconductors. These include, for example, polymers based on diketopyrrolopyrrole (DPP). The theoretical part of this thesis deals with organic electronics, conductive polymers and DPP-based polymers, their properties and applications. It further describes the most common synthetic approaches to DPP-based polymers. The experimental part of this final work describes the preparation of intermediates necessary for the synthesis of the resulting DPP-based polymers using Stille reaction. The thiophene derivative of DPP was N,N'alkylated and subsequently brominated. Furthermore, organotin intermediates were prepared, which together with the dibrominated DPP derivative participate in the polymerization.
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Possibilities for Financing of Activities in the Construction Company
Veselý, Daniel ; Matyáš, Pavel (referee) ; Hroníková, Marta (advisor)
This thesis summarizes the options that are offered in the financing of corporate activities. The theoretical part examines the individual sources of finance, factors affecting financing, outlines the information that can be obtained from a financial analysis and mentions financial planning as a tool for future ideas for funding. The practical part describes the real construction company and the way it uses in terms of financing their activities. Financial analysis of the company serves as the basis for consideration alternative options.
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Synthesis of advanced adamantane containing intermediates based on para-bis (2-thienyl) phenylene. Influence of intramolecular hydrogen bonds on photoisomerization
Veselý, Dominik ; Pospíšilík, Karel (referee) ; Krajčovič, Jozef (advisor)
This diploma thesis describes study and onward synthesis of advanced organic structures with potential application in the field of organic electronics and, in particular, molecular photoswitches. In the theoretical part of the thesis are closely described most commonly used conventional molecular photoswitches with special attention to the influence of the structural modifications on properties and applications of the given derivatives. Next passage is dedicated to study of donor-acceptor systems, as fundamental building blocks for synthesis of advanced derivatives. The possibilities of derivatization with a goal of improving the physicochemical properties of these compounds are also discussed. In the final chapter are proposed modern synthetic methods for preparation of novel materials for organic electronics. This section is connected with an experimental part, where are designed and consequently synthesised 4 novel imine derivatives with dodecyl and adamantyl-ethyl side chain.
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Novel organic semiconductors for bioelectronic applications
Veselý, Dominik ; Richtár, Jan (referee) ; Krajčovič, Jozef (advisor)
This bachelor’s thesis deals with a highly perspective field of bioorganic electronics. It is divided into a theoretical and an experimental part. In the theoretical part of the thesis basic device functioning principles in conjunction with living organisms and production of such devices together with their practical application are elaborated on. In the next part of the thesis conductive polymers as advanced materials for organic electronics, their synthesis, chemical modification and functionalisation, but also their use for functional electronic devices are analysed. A synthetic route for preparation of new functional organic materials by the means of modification of a basic monomer on a molecular level is proposed in the final chapter. This chapter is connected with an experimental part where a basic monomer of the most important conductive polymer for bioelectronic applications is prepared.
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Study of fish-passing facility on the weirs on Bečva river
Chovancová, Kateřina ; Veselý, David (referee) ; Milerski, Rudolf (advisor)
This master's thesis consists of three main parts. The first section describes some types of fish crossings and basic information of their design. There is also marginally described program HEC-RAS. The second part is about the Zuberská weir and Osek stage. I review here fish ladders according to the original drawings in the HEC-RAS and suggest possible options to address these passable fish crossings for the fish crew. The last section is devoted to Mikulenkov weir where the fish crossing has been completely removed. Here I propose a new fish ramp according to modern knowledge and applicable standards. I also review the proposed fish ramp in the HEC-RAS program in order to verify the hydraulic characteristics.
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Automated measuring station
Veselý, David ; tk,, Jiří Tlustý ,atx – (referee) ; ATX, Jiří Hronek, (advisor)
This work deals with questions about the measuring of the tantalum capacitor leakage current. This thesis answers to many questions of this sphere e.g. Study of basic parameters, analysis of the measurment LI Head, creating software for the connection between the measuring LI Head, the computer and the analog measuring card, activation of the measuring set, verification of set functionality and economic evaluation of the whole project.
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Maximalization of Market Value in Construction Company
Veselý, Daniel ; Vítková, Eva (referee) ; Chovancová, Jitka (advisor)
This thesis is about maximization of the market value of a company as a primary financial target of nowadays financial management. Valuation of real company in first part using discounted cash flow method is then completed with a sensitivity analysis. Purpose of it is evaluation of a rate of consequences from forecasted values of individual value drivers to the final market value of the company. The output is represented with suggestions to procuration just to maximize the value of the company.
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Revitalization of weir on Svratka river inVranovice with fish crossing
Jágr, Josef ; Veselý, David (referee) ; Milerski, Rudolf (advisor)
This present work deals with the design of revitalization measures for the weir in Uherčice (Vranovice) on the river Svratka. The current condition of weir constuction does not allow aquatic animals to migrate, weir constuction is transverse barrier. In this river section are found many fish species like barbel, vimba, nase and chub, for which is migration completely natural part of their behavior. There is concrete weir with a movable flap and on the right bank is located a small hydroelectric power plant. Close to hydroelectric power plant outlet is mouth of Šatava river. Weir revitalization consists of fish pass construction. Proposed fish pass is located on the right bank of the stream. There is a close-to-nature bypass channel that will ensure a continuity of water flow of already mentioned river Svratka between Věstonice lake and Rajhrad weir. Entrance to the fish pass will use a part of Šatava mount, then will continue in the artificial channel to the upstream part of Svratka river. Fish pass exit cannot breake the function of protective anti-flood embankment of Svratka river, hence there will be used block off construction. During condition of flooding will exist the possibility to shut down proposed fish pass.
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